The iPhone 5 will have a 4 inch screen

  9to5 mac claim that they've got there hands on what they say is the picture of the front bezel of the iPhone 5. from the picture its obvious that the iPhone 5 will have an edge to edge screen and it will be a little taller.
  This might be a mock up or the bezel of the current iPhone 4 cut. but none the less this is an expected move by apple to keep up with the competition that its facing from the android phones which have bigger screens than the current iPhone 4.